Immersing apparatus



Ian. 27, 1931.

G. H. 1 Ew|s IMMERSING APPARATUS Filed sept. 2e, 192s W A TTORNE-Y.

Patented Jan. 27, 1931 UNITED STATES tisane s Y GEORGE H. LEWIS, OF GHIOOPEE FALLS, Masseciiusnrrsassienon morne, Fisirniin- BER COMPANY, OF onicornn FALL-s, MASSACHUSETTS, .a CORPORATION oFiMassA- L CHUSETTS IiviivinnsiNe rrARA'TUs l y Application filed September 1928. "Serial No. 309,088.V

In the manufacture of pneumatic tire casings it has been found desirable to coat the air bag upon which the casing is cured with a liquid preparation such asy a mixture `of latex and powdered mica for lengthening the life of the bag and to simplify its removal from the casing. In coating the bag an Operator usually dips each bag into a pan orshallow tub of this liquid and hangs it upon a hook where the surplus liquid may drip olf. This is a slow and expensive method of procedure and it is an object of my in` vention to provide an imniersing apparatus that will dip the ybags into the liquid as they are carried along a conveyor.

Referring to the drawings,

Fig. 1 is a side view, partially broken away, of an apparatus embodying my invention; Y

Fig. 2 is a view taken substantially on line 2-2 of Fig. 1; and 4 Figs. 3 and 4 are detail views showing steps of the operation of the apparatus.

In the drawings I have shown the immersing apparatus mounted on a tank 1U beneath a conveyor 11 which may be used for carrying air bags from freshly curedy tire casings to casings about to receive air bags preparatory to curing. This conveyor 11 has a series of freely suspended hooks 12 over which air bags 13 may be hung.

The conveyor is carried over sprockets 14 on a frame 15 and is inclined into the tank 10 by means of another sprocket 16 mounted on a shaft 17 on the tank. The tank is partially filled with a liquid 18 for coating the bags 13.

Unless means are provided for holding the bags 13 firmly on the hooks 12 they would be buoyed up off the hooks by the liquid. To overcome this difficulty I have provided on the shaft 17 a paddle wheel 19 which has a series of bars 20 adapted to compr-ess the bags slightly between the barsand the hooks 12. `The slight pressure on the bags 13 serves a double purpose; besides holding the bags on the hooks 12 as the ends of the hooks are drawn through the liquid, the pressure also causes a slight exhaust of 'air from the bags While they are being carriedvthrough thus prevent any of the liquid' 18` from getting.. inside. the bags. i

A pair of bars 22 at the incoming end of the tank 10 guides bags straight into the paddle wheel 19 while an inclined tray 23 f OFFICE r l 4the-liquid and, providing *the vstems 211 ofVV theb'agsare located near-the hooksl, will at the other end of they tank catches thev drippings of liquid from the bags and allows it to run back into the tank.

For ease in following the operation of t-he v paddle wheel 19 I have lettered the bags 13 being controlled by the wheels a and b, and the controlling lbars 2O of the wheels c, d, e

and f. lVith but a short movement of the*l conveyor 11 from the position shown in Fig. i

1 to that of Fig. 3, the bag a will snap quickly up out of the liquid 18'due to its buoyancy and its release from the bar c. At

the same time bag b is being acted upon by bars Z and e. Additional movement of the conveyor willv cause the bag b to be buoyed by the liquid (Fig. 4;) and held only by bar e. Still further movementV will bring the bag b under the action of bar f which will cause the hooks. n p

Having thus described my invention, I claim:

1. A device for treating annular air bagsf which comprises a tank adapted to vhold a treating liquid, a conveyor, means to guide 'the conveyor into and from proXimitywith the surface of the liquid,spaced bag supporting hooks freely suspended from the conveyor and adapted to carry the bags supported thereon through the liquichmeans to engage the outer periphery ofthe bags adjacent the hooks as the bags enter the liquid to insure submergence of the bags, said means beingv i" operative to swing the hooks rearwardly as the bags enter-theliquid and forwar'dlyas the bags leave the liquid,l and guides to maintain the'bags in vertical position during their p pressure holding the bags tightly on their liquid, spaced bag supporting hooks freely suspended from the conveyor and adapted to carry the bags supported thereon through the liquid, a cylindrical frame rotatable with said sprocket, said frame being of larger diameter than the sprocket and provided With transverse bars adapted to engage the outer periphery of the bags adjacent the hooks as the bags enter the liquid to vinsure submerg'enc'e o,t-lie bags, said bars being operative to swing 'the hooks rearwardly, 'as the bags enter the liquid, to delay the entra-nee of the bags into the liquid and to swing the hooks forwardly as the bagsleave the liquid to ao-g oelerate the removal of the bags from the liquid, and guides to maintain the bags in Vertical position during their passa-ge through the liquid. Y e

AGEORGE H. LFVIS. 

